Asuristan (Assyria) was a satrapy (province) of the Sassanid Empire. The territory was taken during the fall of the Parthian Empire. Satrap (Greek σατράπης satrápēs, from Old Persian xšaθrapā(van), i. ... After Islamic Conquest Modern SSR = Soviet Socialist Republic Afghanistan Azerbaijan Bahrain Iran Iraq Tajikistan Uzbekistan This box: The Sassanid Empire or Sassanian- Zaza nian)- Empire (Persian: á¹¢Äá¹£ÄnÄ«yÄn) is the name used for the fourth Iranian dynasty, and the second Persian Empire (226â651). ... Parthian Empire at its greatest extent, c60 BCE. The Parthian Empire was the dominating force on the Iranian plateau beginning in the late 3rd century BCE, and intermittently controlled Mesopotamia between ca 190 BCE and 224 CE. Parthia was the arch-enemy of the Roman Empire in the east and...